Schedule Mar 18, 2011
Multi-Array Sunyaev-Zeldovich Observations of A1689
Jon Sievers (CITA)

We have obtained observations of the Sunyaev-Zeldovich effect in A1689 using 5 different arrays. These data, from CBI, CBI2, SZA, BIMA, and OVRO, have good signal to noise over a factor of more than 20 in angular scale. We model several different models for cluster profiles and find that with these extensive SZ data we are able to constrain the cluster profile with the SZ alone. For instance, for an isothermal beta model, this is the first SZ-only dataset that can break the degeneracy between theta and beta, which we find to be consistent with those derives from X-ray observations.

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